Does the Hyundai i30 fail the MOT on noise, emissions and leaks more than it should?
The Hyundai i30 records 1.38 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 2.79 expected for a car of the same age mix: less than expected for its class and age (−1.41, 95% interval −1.45 to −1.37). It ranks 485 of 678 models on noise, emissions and leaks (1 = most failures above expected).
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · all models on noise, emissions and leaks · check a Hyundai i30 by registration
What exactly fails on noise, emissions and leaks?
The most frequent DVSA defect wording in this group on the Hyundai i30 is “Engine MIL illuminated indicating a malfunction”, recorded 2,536 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Engine MIL illuminated indicating a malfunction | 2,536 | 0.41 |
| Smoke opacity levels exceed the manufacturer's specified limit | 1,421 | 0.23 |
| Emissions test unable to be completed | 1,092 | 0.18 |
| Lambda coefficient outside the default limits or the range specified by the manufacturer | 804 | 0.13 |
| Emissions levels exceed default limits | 505 | 0.08 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 619,816 (initial tests) · Method: failure items (major and minor) grouped by DVSA's defect tree; wordings with 30+ items · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV
If a Hyundai i30 gets a noise, emissions and leaks advisory, how often does it fail next time?
4.3% of Hyundai i30 MOTs with a noise, emissions and leaks advisory were followed by a fail in the same group at the next MOT, typically 12 months and 6,730 miles later (9,377 advisories followed).
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 9,377 (advisories followed) · Method: the same vehicles followed to their next ordinary MOT · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV
Other pages for this model
Hyundai i30 2007 · Hyundai i30 2008 · Hyundai i30 2009 · Hyundai i30 2010 · Hyundai i30 2011 · Hyundai i30 2012 · Hyundai i30 2013 · Hyundai i30 2014 · Hyundai i30 2015 · Hyundai i30 2016 · Hyundai i30 2017 · Hyundai i30 2018 · Hyundai i30 2019 · Hyundai i30 2020 · Hyundai i30 in Norway · Hyundai i30 in Finland · Hyundai i30 by postcode area · Hyundai i30 body, chassis and structure failures · Hyundai i30 brakes failures · Hyundai i30 vehicle identification failures · Hyundai i30 lamps, reflectors and electrics failures · Hyundai i30 road wheels failures · Hyundai i30 seat belts and airbags failures · Hyundai i30 steering failures · Hyundai i30 suspension failures · Hyundai i30 tyres failures · Hyundai i30 visibility failures